[AutoImport] Add OriginalNameImportSkipVoter for auto import

[samsonasik]

Cherry-pick from PR:

• Add PostRectorInterface instance class names to list of applied rectors #7304

to cover warning no change on NameImportingPostRector, see

#7304 (comment)

This skip voter is used to verify long name, as short name verify may conflict
see test PR:

• [AutoImport] Add test for skip auto import on conflict lower short class name usage #6208

ref https://3v4l.org/21H5j vs https://3v4l.org/GIHSB

[samsonasik]

All checks have passed 🎉 @TomasVotruba I am merging it ;)